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Phosphorus, Serum / Plasma
|Performed by||Parnassus & Mt. Zion Chemistry|
|In House Availability||Test available 24 hours per day 7 days per week|
|Container type||Gold top or Light Green top|
|Amount to Collect||1 mL blood Click here for Microdetermination info|
|Sample type||Serum or plasma|
|Preferred volume||0.5 mL serum or plasma|
|Min. Volume||0.2 mL serum or plasma Click here for Microdetermination info|
1. Normal range for pediatric patients adapted from Soldin, Steven J., "Pediatric Reference Ranges", 6th edition, AACC Press, 2007, method 1.
2. Normal range for adults was determined by testing 271 male and female healthy blood donors at UCSF.
|Critical value||< 1.0 mg/dL|
|Stability||Room temperature 8 hours, refrigerated 2 days, frozen at -20C 1 week|
|Turn around times||STAT 1 hour, Routine: 4 hour|
|Additional information||To convert mg/dL to mmol/L (SI units) multiply by 0.323.
Phosphorus, like potassium, is released by platelets during clotting, and serum levels are approx. 0.2 mg/dL higher than those measured in plasma. Levels can be falsely elevated by thrombocytosis, though not as predictably as those for potassium.
High dose liposomal amphotericin B treatment may also cause falsely elevated serum phosphorus values in this DXC assay (see Bailey H and Chan E, Clin Chem 53:795-6, 2007)
|Last Updated||2/17/2012 9:56 AM|
|Lab Procedure Link||Click here for Procedure|